Static and Fatigue Strength in Shear of Beams with Tensile Reinforcement

ANN-Based Fatigue Strength of Concrete under Compression

“…The knowledge about the fatigue behavior of materials under controlled loading conditions also serves to interpret fatigue testing on structural elements [19,20,21]. In the past, experiments have been carried out regarding the fatigue life of deep beams [22,23,24,25], shear-critical concrete beams [19,26,27,28,29,30,31,32,33,34], and shear-critical slabs [35]. The loading conditions are important for structural tests; research [36] indicates that the fatigue life under moving loads is lower than under cycles of loading applied at a single position.…”

Shear fatigue strength of reinforced concrete members without transverse reinforcement according to the compression chord capacity model

“…1c and they are also similar with those observed in tests under quasi-static loads. It should be mentioned that during their experimental tests, Chang and Kesler [6,7] observed splitting cracks in some cases at the level of the longitudinal reinforcement (Fig. 1c), also called by other authors delamination cracks [8], and concluded that this splitting behaviour was considered as a secondary failure due to the fact that the crack was developed after the beam had "failed".…”

“…The database of fatigue tests on shear critical beams published in [8] by Fernández-Ruiz et al, based on the database initially developed by Gallego et al [12], will be used. The database includes 87 tests reported in [6,7,10,[25][26][27][28][29][30][31]. The distribution of the different relevant parameters of the beams included in the database is presented in Fig.…”

“…Since the beginning of the study of the shear fatigue behaviour of RC elements without shear reinforcement, failure modes have been well comprehended and described. In 1958, Chang and Kesler [6,7] classified the different modes of fatigue failure in two groups: the first one is related to the fatigue of the longitudinal reinforcement in tension (Fig. 1a), and the second is described as the failures whereas the compression zone at the top of the diagonal or shear crack, subjected to combined compression and shear, became so small to resist the applied load.…”

ANN-based Fatigue Strength of Concrete Under Compression

“…The knowledge about the fatigue behavior of materials under controlled loading conditions also serves to interpret fatigue testing on structural elements [19][20][21]. In the past, experiments have been carried out regarding the fatigue life of deep beams [22][23][24][25], shear-critical concrete beams [19,[26][27][28][29][30][31][32][33][34], and shear-critical slabs [35]. The loading conditions are important for structural tests; research [36] indicates that the fatigue life under moving loads is lower than under cycles of loading applied at a single position.…”